Schaller M6 135 Guitar Tuning Machine

The Schaller M6 135 guitar tuning machine offers precision engineering and smooth tuning stability for solid and slotted headstocks. Built with a refined 1:18 gear ratio, it ensures precise, velvet-smooth tuning and dependable pitch retention.
Every component is CNC-machined to exact tolerances, featuring high-grade brass string posts and permanently lubricated sealed housings for completely maintenance-free operation. The self-locking drive design guarantees even, stable performance under tension.
Designed with an innovative stepped M6 flanged washer with a 0.39 in (10 mm) diameter base, it reliably centers the string post without requiring stepped headstock drilling. It shares identical mounting dimensions with legacy M6 models for seamless drop-in replacement.
Gear Ratio
1:18
Weight per Single Tuner with Button (Small/Large)
Metal (1.27 oz / 1.34 oz), Perloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including hollow screw
Button Bore Hole
0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive surface
Product Weight
0.13 lb
Brand
Schaller
Product Type
Guitar Tuning Machine
Post Material
Brass
Lubrication
Permanently lubricated with Schaller special grease